Fix Issue thelfer#460

nagelt · Dec 8, 2023 · 0faf292 · 0faf292
1 parent d6556ae
commit 0faf292
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diff --git a/docs/web/release-notes-3.0.13.md b/docs/web/release-notes-3.0.13.md
@@ -19,6 +19,10 @@ eqnPrefixTemplate: "($$i$$)"
 
 # Issues fixed
 
-## Issue #459: [mtest] correct the documentation of `@OutputFrequence`
+# Issue 460: [tfel-config] allow to modify the compiler flag associated with the `C++` standard 
+
+For more details, see <https://github.com/thelfer/tfel/issues/460>.
+
+## Issue 459: [mtest] correct the documentation of `@OutputFrequence`
 
 For more details, see <https://github.com/thelfer/tfel/issues/459>.
diff --git a/tfel-config/src/tfel-config.cxx b/tfel-config/src/tfel-config.cxx
@@ -542,9 +542,15 @@ int main(const int argc, const char* const* const argv) {
 
     if (compilerflags) {
       std::cout << COMPILER_FLAGS << " " << COMPILER_CXXFLAGS << " ";
+      const auto* const cxx_standard =
+          getenv("TFEL_CXX_STANDARD_COMPILER_FLAG");
+      if (cxx_standard != nullptr) {
+        std::cout << cxx_standard << " ";
+      } else {
 #if (defined __GNUC__) || (defined __clang__) || (defined __INTEL_COMPILER)
-      std::cout << "-std=c++17 ";
+        std::cout << "-std=c++20 ";
 #endif
+      }
     }
 
     if (debugflags) {